无法打印字符串数组元素 [英] Can't Print String Array Element

问题描述

每当我尝试运行此程序时，它会返回一个错误：

Whenever I try to run this program it returns an error saying:

无操作符<匹配这些操作数

no operator "<<" matches these operands

另请注意，程序只在 getChoice c $ c> function。

Also note that the program only runs into this problem in the getChoice() function.

#include <iostream>
#include "utilities.h"

using namespace std;

int getChoice(string inChoices[]){
    int numOfChoices = sizeof(inChoices) / sizeof(inChoices[0]);
    string x = inChoices[0];
    string y = inChoices[1];
    cout << x << endl << y << endl;
    return numOfChoices;
}

int main()
{
    string choices[2] = { "Happy Day", "Even Better Day" };
    cout << utilities::getChoice(choices) << endl;

    cout << endl << sizeof(choices) / sizeof(choices[0]) << endl;
}

推荐答案

$ c> #include< string>

You need to #include <string>

并且您的计算 numOfChoices getChoice（）是错误的，因为参数 inChoices 实际上是一个指向字符串的指针，而不是 。

And your calculation of numOfChoices in getChoice() is wrong, since the parameter inChoices is actually a "pointer to string" instead of "array of strings".

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